Alexander Koval created SOLR-4763:
-------------------------------------
Summary: Performance issue when using group.facet=true
Key: SOLR-4763
URL: https://issues.apache.org/jira/browse/SOLR-4763
Project: Solr
Issue Type: Bug
Affects Versions: 4.2
Reporter: Alexander Koval
I do not know whether this is bug or not. But calculating facets with
{{group.facet=true}} is too slow.
I have query that:
{code}
"matches": 730597,
"ngroups": 24024,
{code}
1. All queries with {{group.facet=true}}:
{code}
"QTime": 5171
"facet": {
"time": 4716
{code}
2. Without {{group.facet}}:
* First query:
{code}
"QTime": 3284
"facet": {
"time": 3104
{code}
* Next queries:
{code}
"QTime": 230,
"facet": {
"time": 76
{code}
So I think without {{group.facet}} Solr uses cache to calculate facets.
Is it possible to improve performance of facets when {{group.facet=true}}?
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